The Event Horizon Telescope Collaboration observed the supermassive black holes at the center of M87 and our Milky Way galaxy (SgrA*) finding the dark central shadow in accordance with General Relativity,... continue reading

This successful test of the upgraded and now human rated Dragon capsule is the first step towards the USA being able to send astronauts to the ISS without hitching a lift on Russian Soyuz spacecraft.
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50 years ago, three NASA astronauts embarked on a journey that would take them “Round the moon and back”. The Apollo 8 mission proved the performance of the command and service... continue reading

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We use some cherry tomatoes and Krakatoa Tubes in a classic demonstration of the value of safety goggles.
Krakatoa on Objectivity: https://youtu.be/1bnvNI-j22E
Previous Krakatoa... continue reading

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While steel reinforcement solves one of concrete’s greatest limitations, it creates an entirely new problem: Corrosion of embedded steel rebar is the most common form of concrete... continue reading

In this video, Tim demonstrates a variety of Lenz's Law demonstrations. At its simplest, you can just drop a magnet down a metal tube, maybe made of copper or aluminium, and be surprised at how slowly... continue reading

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Amazing high resolution photos of the Earth should show that the earth is oblate, but it's hard to see because the difference is about 0.3%. So here's a quick demo highlighting the difference.
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The Galton Board is a 7.5” by 4.5” desktop probability machine. This device brings to life the statistical concept of normal distribution.
As you rotate the Galton Board... continue reading

At the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty.... continue reading

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A simple demonstration of the learning ability of a monitor lizard.
If you're curious about how they get back into the enclosure, when they need to bask to warm up again they... continue reading

YouTube: The merging of two neutron stars was detected by gravitational waves and then by telescopes in all parts of the electromagnetic spectrum. This is a historic detection as it demonstrates:
- the... continue reading

I recently had the idea for this new vacuum cannon design that many of you might be interested in. Since it hasn't been very long since my last vacuum cannon video I thought I would make this a more casual... continue reading

It was just a routine workers’ compensation fraud case for Ken Sheppard. Show up for a spot check, do some surveillance of the subject and keep it pushing. But on March 3, 2014, it was anything but routine... continue reading

Chef is holy ground for film foodies, and as demonstrated in a previous episode, has some real culinary chops behind it (courtesy of Roy Choi). I love a good Cubano as much as the next guy, but can some... continue reading